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11Alexandr11 [23.1K]
2 years ago
8

Why earth is considered a closed system

Biology
1 answer:
nordsb [41]2 years ago
6 0
Https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcQ-UBB8p4jNRbS9Tsp2MvSpy2Ra2Z1ucSmng1KringwaDYa...
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